Motor-operated adding mechanism.



' c. F.' LAGANKE & 1. A. SMITH.

MOTOR OPERATED ADDINGVMECHANISM.

APPLICATION FILEDDEC. 30.1905.

.Patented Apr. 13, 1915.

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Noms rams. mc. Luna vusmmw, n c

c. F. LAGANKE L1. -A SMITH. MOTOR OPERATED ADDING MECHANISM. APPLICAION FILED DEC-30' 1905.

1,135,118. l l y PatentedApr.13,1915

me/Mirow C.F.'LAGANKE a1. A. SMITH. MOTOR OPE-RATED ADDING MECI'IIANISM. APPLICATION FILED DEC.30| |905- 1,135,118. I Patented Apr.'13, 1915.

8 SHEETS-SHEET 4.

#cnaf .SEL (UL/w Joh/1065.5 wumo.;

@Hornets c. F. LAGANKE 6.71. A. SMITH. lMOTOR OPERA'TED ADDING MECHANISM.

APPLICATION FILED DEC. 30.v 1905. f

Patentd A191213, 1915.

8 SHEETS-SHEET 5.

c. F..LAGANKE s. J. A. SMITH.

MOTOR O'PERATEU ADDING MECHAN-ISM. 1 AvPLlcATloN FILED 050.30. 1905.

i 1 135,118. f v f Patented Apr.1s,191 5.

, I v snEn'rs-salzm'a.

C. F. LAGANKE 6L J. A. SMITH.r u MOTOR OPERATED ADDING MECHANISM.

, APPLICATIQN FILED DEC.l 30. 1905- v Patented Apr.13, 1915.

B EERSTE-SHEET 7.

anke,

Snom/wow vC. F. L-AGANKE &1. A. sMxTH.

MOTOR OVPERATED ADDING MECHANISM. APPucATxoN FILED umso. wos.

1,135,1 18. Patented Apr. 13, 1915. 8 SHEETS-SHEET 8.

Stratum]- CHARLES F. LAGANKE AND JOHN AsBURY SMITH, or HAREISBURG;PENNSYLVANIA,

ASSIGNORS TO ELLIOTT-FISHER COMPANY, F

OF DELAWARE.'

Nnw YORK, N. Y., 'A CORPORATION MOTOB-OPERATED ADDING MECHANISM.

Specification of Letters Patent. l

Patented Apr.` `13, 1915.

' Applicaton'led December 30, 1905. Serial No'. 293,953.

T0 all whom it may concern: p f 4Be it known that we, CHAnLEs F. LAGANKE and JOHN A. SMITH, both 'citizens of ,the

United States, residing at' Harrisburg, in the county of Dauphin and State of Pennsylvania, have invented ,a1 nevi* and useful MOtOr-Cperated Adding Mechanism, of

y which the following isa s1: ecification.r

platen or book t This invention relates to calculating machines, particularly to such as are combined with recording mechanism, and more especially to what is known-in the/art as a combined typewriting and calculating machine, the illustrated embodiment ofthe invention comprehending amachine including a flat orgai'iizationy thereof. n

It may be stated, by-way of prem1s'e,'that machines' of the character to which our 1nvention relates ordinarily include keys, the

ypewriter Vas an ladjunctive operation of which causes an operation of' the computing mechanism correspondingy to the value ofthe particular key operatedf The'mechanism whereby the keys cause the performance of these functions is varied, but ordinarily belongs to one of two distinct classes each of which has been the subject ofmorek orrless practical development. In machines vof one type, the'keys, when Operated, vactually''transmit motion to they computing mechanism, the motive power being derived from' `the finger ofthe operator.

The other type of machine is distinguished by va motor which drives the computing' mechanism, but which is controlled-bythe keys, which a're depressed by the finger of the operator to' cause the operation of thecomputingI device, but not to transmit ino-- tion thereto.

The primary object of our present inven-l tion is to pr ucefal machine combining the advantagesofboth 1 of the above described types, and havingfurtherl 'advantages possessed byvneither.

, lTo V'this end, g'the actuating mechanism ofi the computing-,device is combined with a driving motor,"with keys,f-`and with intermediate connections, sov related that motion' may-.be transmitted to' the actuating rmecha'- from the keysv alone, 'fromthe motor alone, or from 4.the keys andy motor acting* 'the partsin-the .positions they .assumejust -.before ythe-'key` reachee'ther limit-of itsf-dwndirectly, ybut in conjunction;

ing and computing mechanisms may Vbe gpllated by either the keys, the motor, or'vv To this4 end motion transmitting connections-are established between the keys and.k the computing device and also between'theeu keys and the recording mechanisxmthe arrangement of the motor beingy such that it may be thrown entirely out of /action when it is desired to operateboth the computing and recording mechanisms from the keys, or into action when it is desired to augment'theI H power applied manually through the keys, or to convert the device for usey as a motor operated, key controlled computing' and record-ingA mechanism. g 570 A further object is to produce positively operating and absolutely reliable mechanism for controlling the motor operated movenents ofthe actuating mechanism fromithe reys. I l Another .object is to produce eficient mechanism for restoring lthe energy eXpendled by the motor, and' various other objects,

in addition to those enumerated, will appear .more fully, asthe succeeding description of580 n the illustrated embodimentof the invention is developed; v n In the accompanyingr drawings-Figure -1 isf a sectional View ofsomuch-of themachire as is necessary to show' the general or- 85V ganization of the mechanism. constitutingj the invention. Fig. 2 is' aplan view of the cover-plate of thecarriage, ,tlie. parts'assembled thereon, and a portion of the'computing device and its support. ^--Fig..3 is a 90 perspective view of' algroup' of elements inf cluding thema-ster wheel, the motor, one of the numeral keys,the mechanism for transmitting motion to the actuator; from the key,

and the master wheel controlling mechanism i 'operated'by thev key, the partsy being in the' positions assumed after slight downward movementof the key. Fig. 3 is a detail` perspective view of the bearing liracken-`Ar driving arm and. pawl, and the check bar, f

-Fig. 3m, but showing'the parts in positions .correspondingto-those indicated inFig. 4. Eig; 5=is another view similar toFigs. 3 `and fl, but showing the. parts in the' positions 'theygassume when the' key f has been fully` i .depressed.. fFig; afis `another view correspending-to Figs. 3a and 4a, but showing the Y partsgingthe positions indicated in Fig. 5. [Fi-g, .61isa bottom plan vievvof the cover-` msm. Y"fforthrowing; the'm0t01` into'and duit.

plate-fof; the, vcarriage and associated parts. Eig. l71 ,a sectional View illustrating the constructionl and operationof the mechaefactoni Fig. AS is an enlarged end cleavation'fojf'the mechanism. mounted'on thecarfafiagjes.FigLv 9 is a plan view of the-motor, v4 portion ofthe actuator shaft, the intermediate'fconnectiona and the motorrestoringor "frevizinding-mechanism.

10jis a rear elegvation of. the structure own in Fig. 9.

'F'ig. .-11 is a vvertical section of 'the subjecttmatter of Fig. '10. Fig..1 2 is a section on' `the line 12-.12 Vof Fig. 11. Fig. 13is a secl' tion'on the line '13-1-'13 of -Fig-11. Fig. la is Singuthe rewinding or restoring mechanism .a detailj view of the mechanism for connecte with. .themo'toin' ,Fig 15 isa detail view, partly in section, of the master Wheel lock- Thelgeneml orgameton iing mechanism. Fig.. 16 is a similar view .illustrating the manner in Which-the master Wheel is automatically-unlocked, and Fig. 17 `is'adetail view o'f-fthe trip.

' :of the. type- -f'uwz'ter.-For the purposer of this disclosure the'- computing mechanismis-A shown com- -"bined with what isknown to commerce as anElliott-Fisher typevvriteror bill-ing machine, exemplified in Patent No. 1573,868 to Y R'. J. Fisher,4 to which 'reference Amay be Z240 made for amore completedisclosureof the f typewriterconstruction than is thought'to be necessary in the present connection.

The typewriter here shownV embodies a 45,., .machine framel fmounted to travel longi- `:tudinally of a'iiat platen 1*1l to space the linesof Writing. Theframe 1 supports a' i `carriage 2 carrying the printing'mechanism and movable vtransversely of the platen to letter space the Writing. The upper port-ion,

of the carriage 2 is in the form of a casing '3 above which are spaced the numeral keys f4? and the letter keys 5, having stems 6 connected at their lower` ends to key levers 7 "it" .fulcrumed withingthevcasing 3 and connected by draw-Wires S'With downwardly swingl ing ype bars 9 mounted on a ,type ring 10 pendent from the carriage casing.

Thecarriage 2 is movedto the right-by to the keys, which thus'controlthe letter@ spacing movements ofthe carriage, it being- 55. 'understood' that such movement takes place",`

the step'by-step advance of the carriage ,for lettergfsp'acing being controlledby lthe usual escapement mechanism operatively related* as the key rises after having been depressed to effect the printing .of a character.

The ,gencralrelaton of the computing del cz'ce to 'the typewm'tngmachinef-In rear of the machine frame 1 a horizontal guide bar 11-is supported by brackets 12. On this bar 11 is slidably supported a computing device ,or register 13, 'which may be shifted along the bar and secured in position 'for use with' respect to a column located at, any pointfon they Work .sheet supported by the platen.

` The device 13 includesa casing 14 which contains the computing. and' registering mechanism, the specific characterrof which constitutes no part of the present invention. Suffice it to say that it includesas usual, a series of denominational members in the form of number Wheelsldesigned to register a series of .denominational values, as for instance, hundredths, tenths, units, tens, hundreds, thousands, ten-thousands, hundredthousands, and millions, the tenths Wheel being of double Widthto accommodateV the decimal'space, see Fig. 2.

Each number Wheel 4is provided upon its periphery with the digits 0- to'9inclusive,

preferably formedin or'upon the end faces ofthe peripheral teeth, one digit of each wheel being observable through a sight opening. Each number Wheel is arranged' to 'make nine-'tenths of a complete rotation independently of. the other, Wheels of theY series to present its digits successively before the sight opcninggand during its. next orl tenth increment of movement, carries the -next Wheeltotheleft la single increment or step, after which the first named'wheel may again 'rotate independently forv nine-tenths of a complete rotation before again advancing the adjacent Wheel to the'le'ft.

Since the-Wheels'I ofthe entire series are related to one another in the manner stated, it vfollovvs that mechanical computations in ,addition'may be..e.ti'ected by -moving the Wheels, corresponding in order or denomination 'to thedenominationsof the digits com-v posing the numbers to be'added, `a number of increments corresponding to the unitary values of such digits, the amount accumulated upon each Wheel being automatically transferred yto the Wheelof next higher order when the limit of denominational value y of the lirstnamed W ieel is reached.

Tlie'lmasterwlwel andz'ts cey operated:

driving conneczfz'ons..-Upon the carriage 2 .of the typevvriting machine is mounted that portion of thecomputing mechanism which seen,4 is mounted on the ,machinef frame 1.'l

spacing. The master 'wheel is designed to rotate the denominational members or numberl-wheels in proportion to the lnumerical values of the 4digits'embraced by the con-- putation.' In-tlie illustrated embodimentot' the invention, the master wheel is key operated, and the operating keys arethe numeral keys-of the typewriter, although it is obvious that, viewing the invention asa calculatingv machine, regardless of the recording'of lthe digits'upon a work-sheet for age, it is iin- A material whether the keys per orm any function'other `than the actuation' of the master Wheel.

' be intermittently rotated in one.v direction Themasterwheel or actuator 15, seeparticularly Figs. 1, 2,3, lland 5,-is ixed'upon --a `comparatively long actuatorsha'fft 16 disposed parallel vwith the axes of the number' wheels and supportedby bearing brackets v1.7 rising from the cover-plate .3 of the carriage casing 3. The shaft 16 is jdesigned to .Y exclusively', the.degree of. each rotation corresponding .to the value of one of thein'u' -ineral keys. The Several keys 4 vare each adapted to be independently connected to the actuator shaft by means of key connec tions, each" of'which is capable of 'transmit-f ting. movement to the, shaft from a key while the connections of a key previouslyl depressed are being retracted.

'In-addition to the brackets 17, aseries of l brackets 18'are securedto the cover-plate 3 4 and correspond innumber with the numeral "keys, the upper portion of each'bracket 18 surrounding the hub 19 of a drivingy ratchet 2() fixed' to the actuator shaft. Immediately adjacent to each ratchet 20 is' a comparatively short-driving arm 21 loosely'mounted on the actuator shaft and `having a'. ycomparatively 'long hub '22 which preferably extends -to the'hub of the adjacentdriving ratchet,

see Fig. 2. The arrangement lof the ratchets -20- and arms 21' is "such'V that they alternate with eachother upon the actuator. shaft so that the .driving arms, whilev free to swing relative to the shaft, y'are retained against lateralgmovement longitudinally thereof.

. Each of the driving arms 21 is designed to move a differentdistance, since the move# ment of eachcorresponds iny extentr to the value of the key byrmeans of which it is swing. `These arms, therefore, have a graduated arrangement', yas indicated, in Fig. 2. At the outer end of 'each driving arm 21 is mounted a swinging driving pawl123whi'ch,

*when theI arm is swung in the direction of the arrow inF ig. 3, is designed to engage a l tooth rof the adjacent driving ratchet 20 and thus establish an operative connection between the driving arm and the actuator so that the latter will b e rotateda distance corresponding to they stroke yof the arm. The

width of the pawl 23 is slightly less than the Y distance between v thek driving arm and the adjacent bracket 18 and said pawl is spring-` pressed toward the ratchet, theswinging v movement of the pawl beinglimited by a stopy pin. 24 extending into an opening 'in the driving arm, as shown in F1g.j3. 'At

the side 'of its axis'"op'pe'site` the pawl each driving :arm is formedwith a ktoothed segment.y 25' .engaged by; a toothed segment 26. formed at one endiofzavthird class'lever 27 fulcrumedat its .opposite end in a bracket 28 secured tothe :cover-plate 3adjacent to the j front edge therecf, .th e fulcrums, of the sev eral levers 27 being. preferably arranged in alinement, Fig. 2.

Each lever 27 isdesigned to beoperated, -for the pur oseofswinging its driving arm, by a secon class lev'erv29' fulcrumed -at its rear end in a bearing bracket 30 mounted at the rear, edge of the cover-plate' 3". yThe levers 29 are connected at their frontendsl to the numeral keys for actuation by the latter and' an operative connection between eacl lever 27 and the adjacent lever 29 is `effectet by 'means ot a pin31 extended laterally from o ne lever )and playing withinua comparatively short longitudinal slot 32 in the other lever. In other words, aslot and pinr connection isv effected between each pair of levers at a oint intermediate of'their ends. As the stro e of `each keyregardless of its value, is the saine, and since a positive connection is effected between each key and one levers 27 to have differential movement vaccordinggto the progressive value of the keys,

the several slot and pin connections are'disposed in graduated arrangement, as best` shown in Fig. 2. By this arrangement the stroke'of the lever 27 operated by the 1 l of the levers 29, it follows that each lever 29 will have the same extent of movement or' stroke, and, as it is necessary for the several 1.00

key will be one-ninth of the stroke vofthe v .lever 27 operated by the 9 key, notwithstanding theV fact that yboth of the levers 29 operated by the 1 and 9 keys re-` spectively, will have exactly the saine stroke', i

the levers 27 l intermediate of 'those just re' j ferred to having strokes proportionate to the values of the intermediate keys.

I )endent ,from the front end of each. lever 29 is a link 33 extending through the'coverplate 3* and provided at a point below said plate-with a projection 34 designed to vnormally engage a recessed vpin 35 projecting from Vthe stein of the adjacent numeral key.

Aff. positive connection is thus established Y between each' keyand one of the operating connections of the computing device so that the key and connection fwill' movein unison during both the operating' and retractile vmovements ofthe parts.

When agiven key is depressed, thedriving arm 21 connected thereto will be swung in the direction of the arrow in Fig.1 3,.and its pawl, engaging the adjacent fixed' ratchet mster Wheel fixed thereon for the purposev 2O,l will rotate the actuator shaft and the ofv rotating that number Wheel With Which I the master Wheel is in operative relation', a

`number of increments corresponding to the unitary value of the key. Whenthe'key 1s 'released its connections will be 4retracted Without effecting reverse rotation of the actuato'r shaft, since it will be obvious that the ously y engaged by its pawl. To prevent driving arm Will swing back to its initial position independently of the ratchet previthe driving -arm from swing-v ing back before it has completed a full-fOr- Ward stroke, which obviously Would result infalsifying the computation, eachV of Jthe brackets 18 is provided with a segmental guard flange 36 concentric with the actuator.

i shaft 1G. Under this flange 36 a lateral proflange 36 performs several functions.

guard posi-tively .preventing accidental dis engagement ofthe pawl from the ratchet until the full stroke is completed and thus actuation of a key connection until the reyl preventing the retraction of the key connecl tion in the event of an incomplete key stroke.k j The ange 36 also servesr to prevent retractile movement of the .latter from a pre.-

vious operation has been completed. ,.The

outer face of the flange 36 is formed with ratchet teeth 39. 1When a driving arm reaches the limitof its operating movement,

the projection or dog 37l on its pavvl will, have passed beyond the front end of the flange" 36, and, as the arm begins its retracj tile movement, the pawl will necessarily ride up the inclined face of the ratchet tooth in rear of the one engaged by it, and

. the outward movement. of the pavvl thus produced Will cause the dog 37 to ride up overthe front end of the liange 36. As the dri-v4 ing' armnow moves back, the dog, instead of traversing the -under side of the'flange, as before, will ride over the flange, `being dogged during such movement by theteeth 39. It will, therefore, be impossiblefto re 'actuate the driving arm'unti-l its retractile movement has been completed.` v

'.To prevent'overrunning of the master Wheel, a universal check bar 40is afforded 'bearings in the forw'ardlyextended- Vupper ends ofthe brackets 1-7. Extended *rearf4 vWard-ly from* this'bar is a swinging check arm 41 designed. to move into engagement witla .ratchet'wheel 42 fixed to the'actuator shaft. 16 tached to .le side of the master Wheel or actuator 15. Normally the check arm` 41 is held out of engagement with the ratchet Wheel 42lby.a' spring 43 encircling the bar adjacent to one end thereof and tending to rock .the same inone direction, the out- Ward or upward movement of the check arm being limited bya stop 44.

Extended radially from theuniversal bar 40 are -a series of arms 45 each of which is arranged to be engaged by one of the drive ing arms 21 as the latter reaches the limit of its movement. pressed, the. driving arm will swing for the purpose of rotating --the master Wheel,A and immediately before said driving arm reaches the limit of its movement, it will engage one .j of the arms 45 and swing the latter from the position. shown in Fig. 4 to that'in Fig. 5,

d preferably also rigidly at- Thus, when a key is dethereby rocking the universal bar and swvinging the check arm 41 into engagement with `the ratchet Wheel 42 to 4positively check the master Wheel at the properpoint andhthus prevent overrunning thereof.; As the driving arm' moves back, upon the release of the key, the spring 43 restores the check bar to its normal position and withdraws the check jarm 41 from engagement with tlie ratchet Wheel 42. Therefore,. as soon as the driving arm has moved back the very slight distance necessary to effect the release of the master Wheel, the latter maybe operated by another i key Without awaiting further retractile movement of the key previously depressed.

Pendent from the under side of the coverplate 3a are a pair of brackets 46, see'Fig. 6, in which is journaled a rock shaft 47 carrying a yoke 48 comprising a pair of armsj49 and a universal b'ar 50. The universal bar `50 is received Within vertical slots 51 in each of the links 33, these 'slots being of sufficient length to accommodate the normally stationary universal bar When the links are re#y .ciprocated vertically during the operation ofthe keyconnections, the bar thus serving to guide the links in their movement and to-- prevent theiraccidental disengagement from thekey stems. -In addition to this function as a guide, the bar 50 maybe shifted laterally f romits normal position forv the pur- -pos'e of'swinging4 the several links 33 out of engagement With' the pins 35 on the key stems .when it is desired to render the numeralkeys independent ofthe computing device connections.` This movement of the .bar may be and preferably is`-effected by.`

l meansbf a total key'52, the stem `53 of which .is connected to the shaft 47l to permit the shifting ofthe key to rock-y the yoke 48' and thus cause 'the universal bar 50 Vto move the links 33 into. or out of engagement with the pins onk the key stems. The yoke is heldin .4

either position by a detent 54,' indicatedv gen 'erally in Fig. 6.V To-.p 1 "event undue upward iso this mechanism in detail because it consti-V tutes that part of the'machine organization whereby motion may betransmitted to the master wheel from the numeral keys, and,.-

as has already been stated, this invention is directed to the production of. a machine wherein the computing device may be operated either from the keys alone, from a motor capable of supplying the necessary motive power, or from both the keys andv motor acting conjointly, the keys constituting 'prime movers forthe actuator, and the motor serving to assist and thus minimize the burden upon the keys.

The matan-Mounted on the `actuator shaft 16 beyond one of the vbrackets 17 is a loose pinion 57 designed to be connected to the shaft when desiredby a clutch 58 operated by a' clutch `lever 59, see Figs. 7, 8, 9 and 10. The pinion 57 is enmeshed With a comparatively large motor gear 60 loosely mounted on a comparatively short motor shaft 61 journaled inbearing brackets 62 rising from the cover-plate 3a. The motor -gear 60, see Figs. 12A and 13, is provided l upon the outer side face thereof with a piv'- '.foted pawl 63 urged by a spring 64 `'into en..

"15.- The provisionof'theclutch 58 makes it gaging relation with what may 'termed the motor ratchet 65 fixed in any suitable manner on the motor'shaft 61. The motor shaft 61 is urged in thedirection of kthe arrow in Fig. 13 by a motor spring 66 of spiral form, one end of said spring being attached vto the shaft 60, as indicated at 67,-

and the otherv end of the spring being attached at 68 -to'aixed part, as-for instance, the plate' 3.` vt will be seen, therefore, that `the motor spring 66 drives the motor shaft 61 in the direction of thearroyvl in Fig. 13,' and that the ratchet Wheel 65 fixed on the shaft engages, the pawl 63 and through the medium thereof drives the motor gear 60,

which in turndri'ves the-pinion 57 and rotates the actuator vshaft 16 and the actuator possible,Jv however, to throw Vthe motor entirel'y .outyof action by' disconnecting the l pinion 57 from the actuator shaft. and `thus permit -thelcompnting and recording mech-v anism tofbe operated Wholly by the power l derived from the fingers ofthe operator as the numeral keys-of the 'typewriter arev manipulated.. 05

:-When the .clutch 58d-s in this released or 4clutch-58'from. the pinion 5 7 and atthe wardly inclined and each is provided y.at 'its front end Witha lpivotedcontact block 76 disposed in the path of one ofthe links33 unclutched position, shown .ing4 dotted lines in" Fig.' 7, the motor gearis held against rotation by a vlocking rlever or detent 69 y'fulcrumed on one of the brackets 17, see Fig. 8, and having its rear end providedwith a 7o cam 70 engaged by a cam projection` 71 ori the clutch lever 59, see Figs. '7 and 10.

'.When the clutch lever 59 vis moved to thel dotted position in Fig. l7, it disconnects the same time forces the-cam. projection '71 on the clutch lever under the cam end 70 of the ylocking lever 69, thus swinging the latter.

`viously tend to rotate the actuator shaft and y if sufficiently powerful, Willactually rotate i' the master Wheel ,prior to the `depression of a key,'iny the absence of special provision for the normal retention -of the actuator shaft. le therefore provide key operated control.- ling .mechanism including a klocking arm 72, see Fig. 1, normally engaging v'the 'ratchet wheel 42 to prevent premature rotary movement of the actuator. The locking arm 72 is ixedto'arock shaft 73 journaled in bearing brackets 74 dependingfrom the'under side of the vplate 3, see Figs. 1 and 6. To. this shaft 73 are also secured a seriesof releasing arms 75 corresponding in number lwith the numeralfkey's of the typewriter.y

The arms 75 are downwardly and :for-

and yieldin ly .held in its normal-position by aspring @see 1 and 3. 'fheflock-Y ing arm 72 is yieldingly retained in both its engaged and disengaged positions by a spring detent`78, see Figs.`1 vand-3`. f

When oney of the numeral keys is de- A pressed, the initial portion ofits movement serves to .cause fthe link 33-connected thereto to swing one ofthe arms 75 byfengagement with the Contact blockl 76 mounted thereon.. This movement of the arm.75 rocks theshaftz l73sufiicien'tly to WithdrawA the' locking-arm 72 from the ratchet 42. When this has beenfj120 accomplished, the swinging'of the arm 75 will have Withdrawn'therhlpclr, 76 outcf-th if' path of the link 33 andthe'liatter will there u yfore'continue its down'viardy movementlv '-g dependently of the block to ei'ecttheiopera 125 ltion of the' master Wheel. We have Aalready seen that asvv a .drivingrl arm 21 completes .its movement, it operatesV the checkbar 40 tothrow the check arm 41 into engagement with the wheel 42 to arrest 139 p I `the master Wheel at the proper time. `It is,

therefore, desirable to utilize this movement y vof the check arm to' throw the locking arm 72 into engagement with the wheel 42 so that,lwhen thev check arm 41 moves away from the wheel it will leave the latter locked by the arm 72`until again released bythe operation .ofa key. To accomplish this result, the check arm 41 is providedwith a tail-piece 79 cooperatively related to one end of a small lever 80 fulcrumed on a bracket 17l similartothe bracket 17 but'extended to provide for the support of the lever 80, see

Figs. 1 and2.V When the lockingarm 72 is s'wungback toits released position,` it en gages the lower"endof the lever 80 and swings the 'sa-ine to present the upper end thereof in engagement ywith the tail-piece 79 of the cheek arm 41, see Fig. 3. Therefore, o when the check arm is swung into engagement with the wheel 42 tov check the master wheel, the tail-piece 79 on said` arm will swing the lever 80, which will move the locking arm 72to its .engaged position, see Fig. 5, and when the retraction of the driving arm permits the'check arm to move out-of engagement with the wheel 42, the locking arm72 will remain in engagement with said wheel andthe 'parts will reassu'me the normal positions shown in Fig. 1..

From this statement of operation, the necessity for the provision of the pivoted blocks 76 will be apparent, since it will be seen that v,

sired to utilize the motor merely as an asf the movement of the locking arm 72 to its engiagingposition takes place. While a key all end of a block 76 is in engagement with the side of the link. 'Necessarily therefore, the block 76 must be made to yield in order to 40 -allow the necessarymovement of the arm 75,

which moves with the locking arm.

' 4The motor reminding mechanism- Forthe purpose-ofrestoring the energy expended `by the motor 66, we vprovide a motor key -81 carried by a key lever 82 fulerumed at its rear end, s showninFig. 8, and suitably connected at S3With a lever 84 fulcrumed at one .end asindicated at 85va-ndz provided with y a segmental rack 86 at its opposite end. The

450 rack'86 is enmeshed-With a pinion 87, preferably vformed integral with a disk 88 rotatably mounted on the motor shaft 61 and pro vided' upon the inner side face thereof With a pawl 89. The pawl 89 is urged by a spring v515, 90 toward the periphery of a cam 91 fixed on y the motor shaft 61 and formed with a shouly der 92. Normally the pawl- 89 and the shoulder 92l of the cam 91 occupy approximately Y the relative positions indicatedby dotted 00 line's in Fi 8. When the motor is operated,

however, t e cam 91 being vfixed to the motor shaft, will rotate-with the latter and the shoulder 92will therefore approach the pawl 89whicl1willremain stationary. The gear- 85 ing. between the motor shaft and the master a 'link 33 are depressed and while thev wheel is so proportioned however, that the several number wheels of the computing device may be operated by the motor before the shoulder 92 on the cam 91 reaches the position [occupied by the pawl 89.- VVhen it is desired t to rewind the motor, it is simply necessary to depress the motor key 81, which, through the intermediate connections, will swing therack 86 downward and thus rotate the pinion 87 and the disk 88 in the direction indicated by the'arrow in Fig. 8. This movement ofthe'disk 88 will present the pawl 89 `to the shoulder 92 ofthe cam 91,apositive connection being thus established between the pinion 87 and the motor shaft. Continued depression of the key 81 will effect4 the reverserotation'of the motor shaft 61 to its normal position, thus rewinding the spring 66 and presenting the shoulder 92 of the cam 91 in the 'position shown in Fig. 8. Upon the release of the key81, the latter, together vwiththe lever 84, the pinion 87, disk 88, and pawl 89, will be restoredto their normal positions, shown in Fig. 8,*by a spring 93 acting on the lever 82.

In addition to the motorkey 81, which is intended to restore the power expended by the motor spring 66 in the operation of thel s'istance to the power derived 'from the finger of the operator or as the sole source of motive power to be applied `to the actuator.

` The 'means for Zoe/ving the master wheel when disengaged from the' computing' clevere-It will be noted that unless provision digit outside cf the column to 'be computed would result in the release of .the master wheel andthe operation of the motor, assuming, of course, that the total key had not been operated to wholly disconnect the keys from the operating mechanism of the computing device. Such operations of the motor may be permitted forthe purpose of assisting in the operation of the printing mechanism, but it is perhaps desirable to prevent the motor from operating and expending its energy, except when it is desired to operate 'is made tothe contrary, the printingof a both the printing and computing mechanisms. For this reason we provide means for locking the master wheel whenever the latter isout of engagement with the computing device and for automatically releasing the master wheel whenever it4 comes into position to operate a denominational member or number4 wheel, (see Figs. .1, 2, l6, 15, 16

and 17). n

Disposed to .engage the ratchet wheel 42, which is-xed relative to the master wheel,

is a locking rod 95 mounted to slide in a suit- I iso zable bearing 96' in the top of the carriage -casing and connected at its lower end (see Fig; `l) to a lever 97 suitably fulcrumed in the casing and normally urged by a yspring -5- 1198 to move the locking rod 95 into engagement with rthe Wheel 42. The'rear end 99 ofthelever 97 projects rearwardly from the casing 3 and moves with the typewriter carlriage'ina path obstructedby atrip 100 mounted independently of. the carriage and preferably ysecured to or formed integral with the casing of the computing device 13, (seeFigs. 1,2 and 17). The trip 100 has inclinedends 101 which act as cams, serving to elevate the rear end of the lever 97 and thus Withdraw the locking bar 95 from the vvvvheel 42 to unlock "the master'wheel' when the latter moves opposite the computing device from either side thereof. Thus itwill 2o be noted that While the locking bar'. 95 is held in its depressed .or inactive position as long as the n'ia'sterk Wheel is opposite the computing device, it will automatically lock the 'master wheel Whenever 'the latter moves-out of engagement with the computingdevice,

so that, shouldy :r1-"numeral keyl be struck, the

IWrite a numeral outside 'of the col-umn, he may dosel by operating the total' key to release thenumeral'keys v' 1 A 'general "remmer-Assuming that the vartsare positioned as indicated in Fig. l,

lfnd that the motor hasbeen Wound ySuficiently-to enable it alonel to drive the actuator shaft and the parts which necessarily driving p 'awlg23lto'fmove under the flange :s on thfegad' cent'bracket which Wlll cause `.4.511ratchet .20. hile this slight initial move: ment O`;t`- rivingarm is taking place, the V actuator 4s iaft '16 will be`relea-sed by the 4vrithdra-vs-"al of theloclring arm'7 2 from the nected to;'tl1e keyuponvvhich the pressure A.is exerted@ v lie positions' .assumed vby theA partsup'on lthis slight `initial depression ofl a keyisisho'wn in' Fig.' 3 of the drawings.

- it'beingobserved ythat the release is keiltected vinan-ua lly, theshaft will be rotated by the motor'f'in thedirectionof the arrow in Fig.

master Wheel'Land'a' denominational' member `ouslyadvanceaftype, arm 9 to th'cplaten.

This oilerationof ythe type arml willl be ef- ;e'ctedfor the reason that the l driving pawl ljf Willbe heldsecurely in engagement with selected. `power of the motor will not be uselessly eX- 'pended, although if the operator desires-to..

p'rojection 37 associated With the adjacent` l 'the p awlto engage'1:the adjacent driving Wheel 42d'lin consequence 'of 'lthe operation4 As-,soonlgas' the actuator shaft is released,

' necessary for. -the-fopera 60' 3 and theginotor will thus serve todrve the' of the computing devicev and to, simultanei.v

the driving ratchet by Ireason of thel cooperative relation or" thepro3ection'37 and the flange 3o, and therefore, as the driving ratchet rotates with the motor driven actuf ator shaft, the driving arm Will be carried around With it, and, through the intermediate connection, will .depress the key and operate the type arm connected therewith- It will be observed, however, that no key,v

will therefore permit the 'associated drivingA ratchet'sto rotate "independently of the -pawls as the actuator shaft is driven. In

other ivords, the initial depression of a key establishes a cooperative relation between the actuator shaft and the driving arm appropriated to thatley and releases the sha-ft to permit the motor to operate the master Wheel and the particular -driving arm so lVhen the masterwheel has rotated a given distance,` the driving pawl will en-y gage one oi2 the arms 45 on the universal check bar i() and thel part-s Will then have assumed the positions shown in Fig. 4. Con- 4 tinued movement'of 4the parts will cause theV arm' to bey swung forward'thus rocking the check bar to present the check arm il in engagement with the WheelL 4-2 for.y the purpose of positively arresting the mechanismivhen the master Wheel has rotated adistance proportionate to the value of the particularvkey depressed. 'As the check arm moves into engagement with the vWheel' '42, its. tail-'piece 79 operates thelever 80 which throws the locking arm' into fengagement 4vviththe Wheel 42. When this operation of the 'partsoccurs thekey is fully depressed,

adigit is printed, thecomputing device has vbeen' operated tofaccumulate ythe/value of 'the printed digitthereon, andthe parts v'villl have assumed theipositionssh'own in Fig.' 5.'

Upon thereleaseofftlie key,l the' parts` return totheir normalypositions; showfnin-A Fig; l,

the locking arm 7 2 lholding the"master Wheel i securely locked until a. repetitionof-fthe fore-1]` 'tial depression-off-the same or'another' key. If the motor is* not Wound".v suicientlytight to alone operate the ,-pats', it is simply l key as before' desc bed rati've relation ndV the factuator aintain such pres# surev uponthe ment Ithe fore exerted-'by thffrnotor (teefect, the 4o'peratierrzof the ma'ster' wheel.- In suchevent, boththemotoriand the key 4Will 130 tozrelease the master' tor to operate the.

Willsuiciently augconstitute driving mea'ns for the actuator or mastery Wheel, as Well as for the printing mechanism.' In other Words, both the computing and recording mechanism Will. be key operated, but the motor ivill render sufficient assistance to materially lighten the touch. y

We yhave now seen that it'is Within the capability' of the machine to have the computing and recording mechanism operated by the motor alone and-controlled by the keys, or operated conjointly by the keys and motor. it remains, therefore, to direct attention to the fact that the computing and recording mechanism may be arranged for operation by the keys alone, since the motor may be entirely disconnected from the actuator shaft by manipulating the clutch lever 59 to disengage the clutch 58 from the pin-k ion 57, In fine, the arrangement of the described mechanism is such that the computing and recording mechanisms may be operated by power derived solely from either the keys or the motor or by power derived conjointly from the motor and keys,

the keys serving under all conditions as manually operated selecting devices for determining'the digit to be printed and the degree ofV movement of the actuator.

Itis thought that from the foregoing description, the construction and operation of the various mechanisms included in the niachine organization v'vill be apparent. It should be understood, however, that many features of the `inventionmaybe embodied in machines other than that selected for illustrative purposes, and the right to effect such changes, modications, and variations as may come within the scope of the protection prayed is accordingly reserved.

` What We claim is't- 1. The combination with a computing device, ofa motor and a numeralkey, both arl ranged to transmit motion to the computing device.

2. The combination with a motor and a numeral key, of a computing device arranged to be operated by either the motor or the key.

' 3. The combination with a computing de-` vice, of an actuator therefor, a series of keysy for operating the actuator, and an actuator driving motor.

4. The combination with a computing device, of an actuator therefor, a series of keys for operating theactuator, a motor disconnected from the actuator, and means for establishing a cooperative relation between the motor and actuator when desired.

5. The combination with a computing device, of an actuator therefor, aseries of keys of different values, means foreffecting a:

driving connection between anyone of said `keys and the actuator, a'motor connected to'` the actuator, and means-'for limiting thelmovement of a'driving arm to operatively and to release the latter.'

movement of the actuator in accordance with the value of the particular' key connected thereto.

G.y The combination with a computing device, of an actuator therefor, a series of keys of different values, means operative upon the initial movement of any one of said keys to eilect a driving connectionv between said key and the actuator, a motor connected to the actuator, and means operated by an element of the connection between the key and the actuator for arresting thelatter at the completicn of a movement corresponding to the value lof the key.

7. T he combination-With a computing device, of a master wheel therefor, a master Wheel-shaft, a series of keys, a corresponding series of driving arms operatively connectedl to the keys, means operated upon the initial connect the same to the master Wheel shaft, and a motor connected to the shaft.

8. The combination with a computing device, of a' master Wheel therefor, a master Wheel shaft, a series of keys, a corresponding series of driving arms'operatively connected to the keys, means operated upon the initial Ino'inent of a driving arm to operatively connect the sameto the master Wheel shaft, a motor connected to the shaft, and means lfor disconnecting the motor from the shaft.

9; The combination With aA computing device, of a master Wheel therefor, a master Wheel shaft, a motor connected to the shaft,

a series of driving arms mounted to swing from the shaft, pawl and ratchet mechanism for connecting the driving arms with the shaft, a series of keys, operative connectionsbetiveen the keys and the driving arms, and

a check device arranged to be operated by either of the driving arms to arrest the movement of the master Wheel.

10. The combination With a computing device, of a master Wheel, a motor therefor, a series of keys,- means ,for effecting a driving connection lbetween either of said keys and the master wheel, and a key operated locking device for the master wheel.

11. The combination with a computing device, of a master wheeltherefor, a motor for lll? the master avheel, a series of keys, a locking device for thesmaster Wheel, and mechanism operated upon the` initial movement of a key to connect the key` with the master Wheel 12.V'The combination with a computing device, of a master vvheel therefor, a master Wheel motor, a locking device normally preventing movement of the master Wheel, keys arranged to move the locking device to release the master Wheel, and means movable y with the master wheel 'for returning the locking device to its normal position.

13. The combination with a computing device, of a master Wheel therefor, a. vmaster 13 ries of devices movable with the master wheel, andmeans adapted to be operated by either of said devices to effect the locking of f the master wheel at 'the completion of av movement corresponding to the of the keys.

' 1&1. The 'combination with a computing de-Iv vice,\of a master wheel therefor, a master wheel shaft, a motor connected to the shaft, a series of driving ratchets mounted on the shaft, a series of oscillatoryv driving arms mounted on the shaft, driving pawlscarried yby the arms, means operated upon the initial movement of a drivlng arm for engaging its pawl with the adjacent driving ratchet, a universal check bar arranged to be operated by either of the driving arms, a check arm `movable by the check bar to arrest the mas-` ter wheel, a series of keys, a driving connection between each key and a driving'arm, a lock-ing arm normally holding the master wheel against movement and arranged to be moved by eitheri of the keys to release the masterwheel, and means movable with the universal check bar for restoring the locking arm to its normalposition.

15. The combination with computing mechanism and recording mechanism, of a .motor and a numeral key having driving connection with both ofsaid mechanisms.

16. The combination with a motor and a*v numeral key, of computing mechanism and recording mechanism both arranged to be operated by either kthe -imotor or the key.

17 The .combination with a computing device, an actuator therefor, and recording mechanism, of a driving motor common to the recording mechanism and actuator, a se-- ries of operating-keys' for the -recordingj mechanism, means for establishing a drivlng connection between either of said c keys and the actuator. i

18. The combination wlth a computing deviceand an actuator'therefon of recording mechanism, a series Vof operating'keys therefor, means for lestablishing a driving connection between either of lsaid keys and the actuator, a driving motor common to the yrecording mechanism and actuator, andmeans for. throwing the motor into and out of-action. c.

19. The combination with a computing device, of an actuator therefor, amotor for the actuator, recording mechanism, a series of keys normally connected to the recording mechanism and disconnected' from the actuator, and key operated meansfor establishing a driving connection between either of said keys and the actuator and for determining the degree of movement ofsaid actuator. 20. The combination Vwith a, computing value of one device, of an actuator therefor, an actuator shaft, a` motor connected to said shaft, a

graduatedl series of kdriving arms mounted*y on the shaft, means operative upon thefini-i ,tialmovement of a drivinr arm to positively ter actuator having their denominational,re-y

lation controlled by the numeral keysof the typewriter, a motor connected with the actuator to operate or assist in the operation of.

the same, and mechanism for operatively connecting the numeral keys of the type'-v writer with the actuator to operate or-assist in the operation thereof. I. y

22. The combination with a typewriter, of acomputing device, and. operating mechanism therefor including a motor mountedon the typewriter carriage. 23. The combination with a typewriter, of a computing device, land operating mechanism therefor mounted on the typewriter carriage and" including a motor.

24. The combination with'a typewriter, of a computing device stationary relativeV to thetypewriter carriage, and actuating mechanism for the computing device including an a universal check device arranged for operactuator and a motor therefor, both movable i with the typewriter carriage.

25. The combination with a typewriter, of v a computing device, an actuator vtherefor movable with the typewriter carriage, a

driving motor for theA actuator, and mechanism whereby the operating movements of the actuator are controlled bythe numeral.' i keys of the typewriter.

26. The' combination with typ'ewriting machine, of a-computing device stationary relative to'the typewriter carriage, -a master actuator movable with the typewriter car-'si riage, a motor, and mechanism whereby the actuator may be operated by the typewriter keys or'the motor, orby the keys and motor conjointly.

27. The combinationwithfatypewritin V machine including a movable carriage, any f numeral ykeysgand printing mechanism mov able therewith, of afcomputing'.` device, a.- masten 'actuator therefor, an f operating vmotor for the actuator, andkey operated means. controllingf-the movement of the actuator? ,16g puting deviceand motor, and means for automatically locking the motor when the v clutch is operated in one direction.

i328. The combination with a ,.iiiiach'ne including-a movable carriage, and v l l"m'ineral keys andvv printing mechanism'mov-` able-therewith, of ,a computing device', an 1 'aictuator therefor, a motor adapted to be connected with the actuator, andA means for establishing 'a driving connection betweenv .the numeral keys 'actuator. o

=3529;. The'combination with a typewriter v including a movable Acarriage.,. 'andnumeral' of the typewriter and the keys and. printing .mechf'niism` movable ."ltherevvithyof a computing/device, a master y30. The combination ,with a typevv-riting actuator therefor mountedy on the typewriter carriage, a motor also mountedjon the type- 7' writer carriage and adapted to' be connected w'ith; the actuator,and means whereby.v the "initial, depression of any numeral key ofl thea typewriter will release theactuator and de-V vterminethe extent of movement thereof. A

machine including a movable carriage, .and

. .numeral keys and printing mechanism mov- -able therewith, o l

normally locked master actuator therefor af computing device, a

mounted on the typewritercarriage, a motor alsoA mounted on the carriage, and adapted. -to bevconnected `to lthe actuator, and means i operative upon the initialmovement of any numeral keyto establish a driving connectionbetween'said key andi-the actuator and to release said actuator.4

-. 31. The combinationwith a typewritinlg*` machine inlllding a movable carriage, .and

numeral keys and printing mechanism inovsabletherewith, of a computing device, a

normally locked master; actuator therefor mounted on the typewriter carriage, a motor also mounted on the carriage and adapted to be connected to the actuator,.means opera'-v tive upon the initial movement of any `numeral key to estabiish adrivingconnecti'on between `said keyand the vactuator and vto release said actuator, and means for arresting and locking theV actuator upon the com.

pletion of its movement.

32. The combination with a typewriter including numeral type bars and' numeral keys, of a computing device including a series. of denominationalmembers, a master actuator for the computing device, a driving motor common to the master actuator and to the type bars,`and means operated by the numeral keys for determining which of the type bars will be operated by the motor and ythe extent of movement of the actuator..

.33. The combination witha computing device, .of a-motor therefor, a clutch controlling the connection fbetvveen the com- 34. The combination. with a vcomputing device, an actuator therefor, and an actua- .f tor shaft,'of a motor, a motor gear `driven v nisaiie i by the-motor and geared to the actuator shaft, a locking device for the motor-gear, a

clutch controlling the connection betweeni the motorA gear and the' actuator shaft, and

an operating 'device common toy the `clutch 'fand locking device.

aa'rhe combination with' ae-jiipaipg deviceand an actuatortherefonsaid device and actuator being relatigelyqmovable to vpresent them in or out offfcoperative relation, of automatic means-for Ilocking the actuator when the latter is disposed out of coperative relation with'the computing de-.

vice and .for releasing the actuator when the latter-is disposed in position to operate thecomputing device.`

The combinationwith a computlng `device and/a rotary actuator, the computing device yand actuator being relatively mov-l ableto present them in orv out of coperative., relation, of means for locking the actuator against .rotary movement, said means being controlled the relativel movement of the' actuator and' computing device.

37. The combination with a computing device, and a rotary actuator relatively movable, of a lockingA device for` theactuator, and atrip controlling the operation of said device and inv turn controlled by the relative movement of ,the computing devicel and actuator. i

38'. The combination with a computing device, of a motor vand-. a key,v both having driving onnection with the computing de- .vice,.me ns normally restraining the opera vtion of the motor, and means operative upon the actuation of the key to release the motor.,` 439. The combination; with a computing nism and aymotor, adapted to act simulta` n'eously to operate the computing device.

. Y40. The combination with va computing device, of a key, a driving connection arranged to transmit motion to the computing ldevice from the key, and a ymotor operating during the actuation of the key to assist in operating the computing device. The combination with. a Vcomputin device, of manually operated means and -V power operated means adapted to act simultaneously to operate the computingl device.

device, of a manually operated key-mecha- 42. The combination with a key and a" motor, of a computing device adapted to be 'driven by the motor alone or -by the simultaneous transmission of the motor and key.

43. The combination .with a key and 4a motor, of a computing device,"and means whereby the computing device maybe oppower from both ias erated by power transmitted from eitherf the key or the motor or from both simultaneously. l

44..The combinationl with a computing device, of an operating element therefor,

iso

a' motor anda key, and-separate driving connections between the operating-element and the motor and key Frespectively.

45.- The combination with .a computing device, of an operating element therefor, a motor, means forv making and breaking an operative connection between the motor and the operating element, 'a key, and separate means for making and breaking a driving connection between they key and the op-V erating element, wherebyvsaid element mayy be operated by the independent action of either the key or .motor or by their conjoint action. Y l I 46. The combination with a key and a motor, of 'a computing device adapted to be operated bythe key alone or by the transmission of power from both the motor andkey. t'

' 47. The 'combination with a computing device and an operating motor therefor, of a key movable to transmit motion to the computing device from the finger of the the motor.

4 8. The combination with a computing device and a series of keys, of means whereby operator and controlling the operation of .motion may be transmitted from the finger 'of the operator to the computing device through the medium of any key, and a motor l arranged to augmentthe power applied to the computing device from the finger of the operator and controlled by the keys.`

. 49. In' a combined typewriting and adding machine, the combination with a typewriter including a carriage, numeral keys,

and printing mechanism, of a register in` cluding a series of denominational members,

numeral keys. l 50. The combination with a computing de-v vice, of a key, means` operative upon the movement of the key. to effect the driving connection between the key and the computing device, a motor, and means controlled by the key to bring the motor into action to assist in 'the operationof the computing de- VlCe.

51. The combination with a computing device, of ya series of finger keys, means for transmitting motion from ,the keys to the' vcomputing device, and a key-controlled motor mechanism constructed and arranged to transmit motion .to the computing device.

52.r The combination with a lcomputing device including. a series' of denominational members,of a series of linger keys arranged to operate said members, 'and Aa ke -controlled motor mechanism constructe arranged to operate the denominational members of the computing device. p

53. The combination with a computin device including a .series ofdenominationa members, of a lseries ofvkeys, connections whereby anydenominational member may be operated by any key, and a motor mechanism controlled bysaid keys and constructed and arranged to operate the denominational members of the computing device.

54:. The combination with a computing device including a series of denominational members, of a motor and key, and operating connections betweeny themotor and key, and the computing device, said motor being variable to permit the operation of the computing device `thereby or by the conjoined action of, both the motor and key.

55. The combination with a computing device, of a series of keys arranged to oper-l ate the computing devlce, a motor, meansy whereby the motor may be broughty into operative connection with the computing device, and means for varying the power of the motor.

In testimony, that we claim the foregoing as our own, we have hereto aiiixed our signatures in the presence of two witnesses.

' CHARLES F..LAGANKE. ,JOHN ASBURY SMITH. Witnesses:

E. A. KEENY, JN0. R. "Garan (Jopies of this patent may be obtained for ve cents each, by addressing the Commissioner of llatents, j Washington, D. C.

andr 

